/*
Let's call two numbers  friend numbers if their representation in base 10 has at least one common digit. E.g. 1123 and 3981 are friend numbers. 


Let $f(n)$ be the number of pairs $(p,q)$ with $1\le p \lt q \lt n$ such that $p$ and $q$ are friend numbers.
$f(100)=1539$.


Find $f(10^{18})$ mod $1000267129$.

Anser:
Time:
*/
package main

import (
	"fmt"
	"time"
)

func main() {
	tstart := time.Now()



	tend := time.Now()
	fmt.Println(tend.Sub(tstart))
}